mermail yugioh deck Abyssalacia - Yu-Gi-Oh! Card Database You can only use this effect of Mermail Abyssteus once per turn. I've had moderate success with

At the start of the battle phase, you can return this card to your hand and summon a level 7 Dragonmaid monster from your hand or graveyard

That "original" tweet showing the card actively being signed has been deleted at the behest of someone who claims to be a friend of the card owner, which is then backed up by someone else saying that they are the card owner, Reddit user ReptileCake

Sorcery Color tag templates(None) Predators' Hour Until end of turn, creatures you control gain menace and "Whenever this creature deals combat damage to a player, exile the top card of that player's library face down

You can only use each effect of "Onibimaru Soul Sweeper" once per turn

Character Development: One of the more fleshed-out characters in the series